Remote Sensor (Temperature and Humidity) Monitoring over RF Link

1. Description

The purpose of this project is to build a system that periodically sends sensor data from a remote device (standalone ATmega328 microcontroller) to a central monitoring device (Arduino Uno R3 development board) over a RF link. Some power-saving techniques have been used in order to preserve remote device’s battery life. For the purpose of simplicity, a simple temperature and humidity sensor has been used at the remote device; it could be easily replaced with any other sensor. The simple topology (one remote device to one monitoring device) could be extended (multiple remote devices to a single monitoring device).

Difficulty level: advanced.

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RF 434MHz ASK Transmitter and Receiver

1. Description

This tutorial shows how to establish a basic RF communication link using cost effective wireless modules (434 MHz transmitter and receiver). The use of low-cost RF modules could be practical in systems with multiple remote sensors and/or other remote devices. On the other hand, this type of modules do not offer advanced security features as it might be the case for the more expensive RF modules.

Difficulty level: beginner.

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